Locomotive-boiler.



No. 182,352. PATENTBD FEB. 14, 1905.

J. M. MOGLEL'LON.-

LOCOMOTIVB BOILER.

i dinal drums which extend. over both the flue sides of both the flue and the fire-box.

. other and preferably in a zigzag manner, and

UNITED STATES Patented February 14, 1905;

PATENT OFFICE.

LOCOMOTIVljE-BOILER.

SPECIFICATION forming part of Letters Patent No. 782,352, dated February 14, 1905.

Application filed May 11, 1904. Serial No. 207,439-

To all whom it may concern:

Be it known that I, JAMES M. MoCLELLoN, a citizen of the United States. residing at Everett, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Locomotive-Boilers, of which the following description. in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to water-tube locomotive-boilers, and has for its object to Sim-.

plify the construct-ion'and to provide a boiler in which all stayed surfaces are eliminated as far as possible. p j I The top of the boiler is formed by longituand the fire-box, and the sides of the boiler are formed by closely-arranged water-tubes,- which are riveted and nippled at their upper ends to the drums, said tubes forming the flue, which'connects the fire-box with the inclined water-tubes arranged one above the the ends of the tubes of each bank are connected to headers or water-legs extending across the boiler. The feedwater is admitted to the header to which the lower banks of tubes are connected, and therefore passes upwardly The products of combustion pass from the flue to the through the banks in succession.

smoke-chamber at or near the bottom of the former, and therefore they have a downward I ments, taken on the lines in and 3 Figs.

3 and 4. Fig. 2 is-a horizontal view taken on the line 2 2, Fig. 1, part of the boiler being broken out in this view. Fig. 3 is a view of the door end of the fire-box. Fig. 4 is a section onthe line a a, Fig. 1, looking. to the right. Fig. 5 is a section on the line b b,

In the Fig. 1, looking to the left. Fig. 6 shows a modification, and Fig. 7 is a view of a portion of the sheet 41.

The top of the fire-box is formed by the shape can be more easily secured to the drums.

In the drawings I have illustrated-tubes which are substantially square in exterior crosssection, and they may be either round or square interiorly, as desired. To make a simple and effective connection between the tubes 4 and the drums l, the outer sides of the outer drums are flattened, and the sides of the tubes 4 at their upper ends overlie and are secured' to such flattened sides of the drums, preferably by riveting and nippling them thereto, as seen in Fig. 5.

I In the form of the invention shown in Figs. 1 to 5 the door end of the fire-box is formed by vertical tubes 6, which are secured in some suitable way at their lower ends to the cross-header 7 and at their upper ends over- 'lie and are nippled and riveted to the flat ends of the drums l. Extending across the boiler between the smoke-chamber and the flue are sheets? and 8, which are connected by the horizontal partitions 9 and which form between them the water legs or chambers 10 and 11. These'sheets extend only part way to the top of the boiler, and secured between them at their upper edges are thelower ends of the water-tubes 12, which overlie the flattened ends of the drums 1 and are riveted and nippled thereto.

stayed in any usual way, and the sheet 8 is nippled to the end tubes 4, as shown in Fig. 2. Extending across the boiler back of the bridge-wall is a water chamber or leg 13, which has communication through suitable nipples 14 with the tubes4 directly opposite. The water-tubes within the fine are inclined I These sheets 7 and 8 are.

- 12 and thence to the drums.

and arranged in banks. In the form of my invention shown in Fig. l the banks are situated one above the other in a zigzag manner, while in Fig. 6 they do not have the zigzag arrangement. I will first describe the form of my invention shown in Figs. 1 to 5. In this form the tubes of the lower bank are designated by 15, and these connect at their lower ends with the water-chamber 10 and at their upper ends with the water chamber or leg 13. The next adjacent bank of tubes are designated by 16, and these connect at their lower ends with the water-leg 13 and at their upper ends with the water chamber or leg 11,

this latter bank inclining in an opposite direction from the first bank. The tubes of the next higher or third bank are designated by 17, and they connect at their lower ends with the water-leg 11 and at their upper ends with certain of the water-tubes 6. Theselatter tubes 17 extend substantially parallel to the tubes 15 and at their right-hand ends in Fig.

1 extend through the fire-box. The lower ends of the bank of tubes 16 lie alongside of the upper ends of the tubes 15 and the upper ends of said tubes 16 overlap or lie alongside of the lower ends of the tubes 17. With this construction the tubes 17 stand vertically over the tubes 15 and. the tubes 16 stand in a vertical plane just one side of the plane of the tubes 15 and 17. It is proposed to employ as many banks of tubes similar to 15 as the width of the boiler will permit,and hence the tubes '16 will lie between the adjacent banks 15.

Situated directly over each bank of tubes 16 is another bank of tubes, 18,which are inclined in the same direction as the tubes 16 and are connected at their lower ends to one of the tubes 12. The tubes 6 are of such size that one bank of tubes 17 will be connected to one tube 6 and the adjacent bank of tubes 18 will be connected to the next tube 6, while the third tube 6 will have another bank of tubes 17 connected thereto. The tubes 17 are therefore connected to the alternate tubes 6 and the chamber 11 through the tubes 17 to certain of the tubes 6, and thence into the drums 1. The cool water at the right-hand end of the drums passes down the tubes 6 to which the tubes 18 are attached, and thence upwardly through the tubes 18 to certain of the tubes The blank water-tubes 12, or those which are not connected to the tubes 18, are connected at their lower ends to a cross header or tube 20, which has These downtakes are nippled at their lower ends into. With this construction there is a gradual upward displacement ofthe waconnected to its ends the downtakes 21 the chamber 11.

ter through thetubes 15 16 17 and a circulation of the water down certain of the tubes 6, up tubes 18, down the blank tubes 12 and the downtakes 21 to the chamber 11, and up the tubes1-7 again. 22 designates small flu es which extend through the lower chamber 10 and through which the products of combustion escape from the main flue to the smoke-chamber. The products of combustion are deflected by the-deflecting-arch 23 to the upper end of the fire-box and thence pass forwardly and downwardly and through the small flues 22 to the smoke-chamber, this general movement being opposite to that in which the water is displaced in moving from its point of entrance to the boiler to the evaporating-surface. By thus causing the water and the products of combustion to be displaced in opposite directions the eificiency of the boiler is increased. The arrangement of the watertubes in the fine is such that an extremely large heating-surface is presented, and at the same time the best possible circulation is obtained.

Any tube in the boiler can be removed without disturbing any of the other tubes, this being accomplished by providing each of the tubes 12 and 6 and the sheet 7 with apertures opposite each tube, which apertures are closed by removable plugs 23. By simply removing the proper plugs the ends of any tube can be reached for cutting or for expanding. Each of the tubes 4, 6, and '12 is provided with apertures closed by removable plugs opposite the nipples, so that any one of said tubes can be easily removed. The upper ends of the tubes 4 and 12 are closed by suitable plugs 24. All of the tubes 4, 12, and 6 are preferably made flat-sided, so that a tight joint can be made between the tubes and the drums and also between the tubes 12 and the sheets 7 and 8.

In Fig. 6 I have shown a slightly different arrangement of water-tubes within the flue, said water-tubes being arranged in inclined banks, but not with the zigzag arrangement shown in Fig. 1. In this form of my invention I extend across the flue the two sheets 41 42, which form between them the water leg or chamber 43, and also employ back of the bridge-wall the two sheets forming the water chamber. or leg 13, as in Figs. 1 and 2. The door end of the fire-box may either be formed by sheets 44 and 45 or by water-tubes, such as tube 6 in Figs. 1 and 2. The lower bank of tubes is designated by 15", and these extend from the lower portion of the chamber 43 upwardly into the chamber 13. From the upper end of the chamber 13 extends another inclined bank of tubes, 16, which connect said chamber 13 with either the chamber between the sheets 44 and 45 or with the various water-tubes at the front of the boiler. Another bank of the inclined tubes, 17, extends from the chamber 43 clear to the-front end of the boiler and communicates with the water-chamber at the door end. I also employ a third bank "of tubes, 18, which connects with the water-chamber 43 at their lower.

end and at their upper end with a water;- leg or chamber 46, which extends clear across the door above the tube 17. The sheets42 and 44 overlie the ends of the drums 1 and are riveted directly to such ends of the drums, and filling-pieces 48 are placed between the edges of the sheets 44 and 45 and 41 and 42, such filling-pieces being riveted to each sheet and tying them together. Any suitable and usual means of staying the sheets 44 and 45 may be employed. For staying the sheets 41 and 42 I prefer to use the hollow stay-bolts 50, as seen in Fig. 7 although any other suitable means of staying these sheets may be employed. I prefer these hollow stay-bolts because they act as flues to prevent the escape of a portion of the products of combustion, and as a result the hot gases adjacent the sheet 42 are uniformly distributed. The products of combustion escape from the flue into the smokechamber 2 through flues or outlets 22. at the lower end of the smoke-chamber and through outlets or flues 22""at the upper end and also through the hollow stay-bolts 50. With this arrangement of water-tubes the water which is admitted to the lower end of the chamber 43 circulates upwardly through the tubes 15 to the chamber 13 and from the latter through tubes 16 to the chamber at the door end of the fire-box and also through the tubes 17 directly to said chamber, and from the latter it passes to the drum 1. Y Water also circulates through the pipes 18 to the chamber 46, and thus into the drum. In this form of boiler the tubes which are subjected to the highest temperature are the short tubes 16, which take their supply of Water from the chamber 13. This chamber 13 is supplied with water through the tubes 15*, and as there are more .tubes 15 than'there are tubes l6 there would always be'a suflicient supply of water tothe latter tubes to prevent them from being burned out, as often occurs when these tubes extend the full length the boiler. The

longer tubes 17, which do extend the full length of the boiler, are not subjected'to as great temperature as the tubes 16, and the danger of their burning outis very. slight." This arrangement of tubes has the advantage that those tubes which are subjected to the highest temperatures are so arranged as to reduceto a minimum the'danger of their burning out. This inclinearrangement of watertubes makes a very rigid boiler,which will withstand the racking to which a locomotive is subjected, As inthe other form of'rnyinvention, all of these tubes are made removable by providing suitable removable plugs opposite the ends of'the tubes.

A boiler constructed'as above described is Although I have illustrated some particular forms of boiler embodying my present invention, I do notwish to be limited to the constructional details shown, as various changes in the shape of the tubes, manner of securing them to the drums, and general arrangement without departing from the invention. While I prefer to make the water chambers at the door end of theflre-box'and those at the upper end of the front .of the flue in the form of tubes, such-as 6 and '12, yet this is not essential, as these chambers could be made in other ways without sacrificing any of the advantages of the invention or departing therefrom. Having fully'described my invention, what I claim as new, and desire to secure by Letters Patent, is i '1. A locomotive water-tube boiler having a fire-box at one end and a smoke-chamber at the other end, a horizontal flue with flat sides connecting said'fire-box and smoke-chamber,

I very simple to build,-easily repaired, and has 65 of the tubes may be varied in. many ways and'a'plurality of banks of inclined water- 2. Alocomotive water-tube boiler havinga 95 fire-box at on'e end andia smoke-chamber at the other end, a horizontal flue with flat sides connecting said fire-box and smoke-chamber,

a plurality of banks of inclined water-tubes 1,

in said flue arranged one above the other in a zigzag manner, the upper ends of the tubes of one bank having communication with the lower ends of the tubes of the next higher bank, and means to deliver the feed-water to the lower bank of tubes. I i

3. A locomotive water-tube boiler having a. fire-box at one end and a smoke-chamber at? the other end, a horizontal flue connecting said fire-box and smoke-chamber, the'sides of the flue being formed by water-tubes in engagement with each other, and aplurality of banks of inclined water-tubes in the flue -arranged one above the otherin a zigzag manner.

4. In a locomotlve water-tube boiler, a 00m? 2 bustion-chamber and-a smoke-chamber connected by a horizontal flue in' which there is a general downward displacement of the products of combustion, a plurality of banksof in clined water-tubes in said flue arranged one above the other ina zigzag, manner, the upper ends of thetubes of one bank overlapping I and being connected to the lower ends of those-of the next higherbank, and means to feed water tothe lower banlrof tubes.

5. A locomotiv'ewater-tube boiler having at one end a fire-b'o'ziahd. at the other a smoke} 'cham'ber,'a -flue connectingsald fire-boxand smoke-chamber, and 1n which. therejis a genizg eral downward displacement of the products of combustion, rows of engaging water-tubes forming the sides of the flue, a plurality of banks of inclined water-tubes in the flue, and means to feed water to the tubesof the lower bank.

6. In a locomotive water-tube boiler, a firebox and a smoke-chamber connected by a horizontal flue in which there is a general downward displacement of the products of combustion, the sides of the flue and also of the firebox being formed by rows of engaging water-tubes, a plurality of banks of inclined water-tubes in said flue arranged one above the other in a zigzag manner, the upper ends of the tubes of one bank overlapping and being connected to the lower ends of the tubes of the next higher bank, and means to feed water to the lower bank of tubes.

7. A locomotive water-tube boiler having a fire-box at one end and a smoke-chamber at the other connected by a horizontal flue, the sides of the fire-box being formed of rows of engaging water-tubes, and a plurality of banks of inclined Water-tubes in the flue. the tubes of said banks being connected togetherin series.

8. In a locomotive water-tube boiler, a plurality of drums forming the top of the firebox, rows of engaging water-tubes forming the sides of said box, said water-tubes com municating with the drums, a smoke-chamber connected with the fire-box by a flue, and a plurality of banks of inclined water-tubes in the flue.

9. In a locomotive water-tube boiler, acornbustion-chamber and a smoke-chamber connected by a horizontal flue, longitudinal drums forming the top of said flue and fire-box, and vertical engaging water-tubes forming the sides of said flue and fire-box.

10. In a locomotive Water-tube boiler, longitudinal drums forming the top of the flue and fire-box, the outer drums having flattened outer sides, and water-tubes secured to such flattened sides and forming the sides of, the flue and fire-box.

11. In a locomotive-boiler, a plurality of longitudinal drums forming the top of the flue and fire-box, the outer sides of the outer drums being flattened, and flat-sided watertubes secured to such flattened sides of the drums and forming the sides of the flue and fire-box.

412. In a locomotive-boiler, a plurality of longitudinal drums extending over the flue and fire-box and forming the top thereof, the outer sides of the outer drums being flattened and closely-arranged flat-sided water-tubes riveted to the flat sides of the drums, said water-tubes forming the sides of the flue and fire-box.

13. In a locomotive-boiler, a plurality of longitudinal drums extending over the flue and fire-box and forming the top thereof, the outer sides of the outer drums being flattened and closely-arranged flat-sided water-tubes nippled to the flat sides of the drums, said water-tubes forming the sides of the flue and fire-box. j

14. In a locomotive-boiler, a plurality of longitudinal drums extending over the flue and fire-box and forming the top thereof, the outer sides of the outer drums being flattened, and closely-arranged flat-sided Water-tubes riveted and nippled to the flat sides of the drums, said water-tubes forming the sides of the flue and fire-box.

l5. In a locomotive-boiler, a plurality of longitudinal drums forming the top of the flue and the fire-box, the ends of all the drums and the outer sides of the outer drums being flattened, and closely-arranged flat-sided tubes riveted and nippled to such flattened sides and ends of the drums and forming the sides of the flue and the sides and door end of the fire-box.

16. In a locomotive-boiler, a plurality of longitudinal drums forming the top of the flue and fire-box, the outer sides of the outer drums being flattened, and flat-sided watertubes having their inner flat sides nippled and riveted to the flat sides of the drums, said tubes forming the sides of the flue and firebox.

17. In alocomotive water-tube boiler,a combustion-chamber and a smoke-chamber connected by a horizontal flue,longitudinal drums forming the top of said flue and fire-box, vertical engaging water-tubes forming the sides of said flue and fire-box, and a plurality of banks of inclined water-tubes in said flue.

18. In a locomotive-boiler, a combustionchamber and a smoke-chamber connected by a flue, longitudinal drums forming the top of said flue and combustion-chamber, vertical water-tubes connected to the drums and forming the sides of the flue and fire-box, and a plurality of banks of inclined water-tubes in said flue arranged one above the other in a zigzag manner, the upper ends of the tubes of onef bank overlapping and being connected to the; lower ends of the tubes of the next higher bank.

19. A locomotive-boiler having a fire-box at one end and a smoke-chamber at the other connected by a flue, two separate water-chambers one above the other extending across the boiler and dividing the smoke-chamber from the flue, a third water-chamber extending across the boiler back of the fire-box, and other waterchambers at the door end of the fire-box, inclined tubes connecting the lower chamber at the front of the boiler to the chamber back of the fire-box, other inclined tubes connecting the latter chamber with the upper chamber at the front of the boiler, and still other inclined tubes connecting the latter chamber with the chambers at the door end of the fire-box.

20. A locomotive-boiler having a fire-box at one end and a smoke-chamber at the other connected by a flue, two separate water-chambers one above the other extending across the boiler and dividing thesmoke-chamber from the flue, a third water-chamber extending across the boiler back of the fire-box, and other waterchambers at the door end of the fire-box, inclined tubes connecting the lower chamber at the front of the, boiler to the chamber back of the fire-box, other inclined tubes connecting the latter chamber with the upper chamber at the front of the boiler, other inclined tubes"? between other of the latter tubes With'the water-leg.

connecting thelatter chamber with the chambers at the door end of the fire-box, and still other water-tubes inclined in. an opposite di-' rection from the last-named tubes and connecting the chambers at the door end of the firebox to vertical tubes, as 12, at the front of the fire-box.

21. In a locomotive-boiler, a lower and an upper water-chamber extendingacross the boiler and dividing the flue from the smokechamber, another water chamber or leg; back of the bridge-Wall, and other water-spaces at the door end of the fire-box, inclined watertubes connecting the lower chamber with that back of the bridge-wall, other inclined watertubes connecting the latter chamber to the up per chamber, still other inclined tubes con- 'necting the upper chamber to the water-s10aces at the door end of the fire-box,jand still other inclined tubes connecting the latter waterspaces to other water-spaces at the front of the boiler, and downtakes connecting the lastnamed water-spaces with the upper chamber.

22. In a locomotive-boiler, a row of closelyarranged water-tubes forming the door end of the fire-box, a steam and water space at the top of the fire-box and fine, a water-leg extending across the boiler at the front end of the flue, a row of closely-arranged water-tubes,

as 12, secured to the upper end of said water-f leg and communicating with the steam and water space, inclined tubes connecting the water-leg with the alternate water-tubes at the,

door end of the fire-box, oppositely-inclined Water-tubes connecting the other water-tubes at the door end of the fire-box with the alternate water-tubes 12, and means connecting the other water-tubes 12 with the water-leg.

23. In alocomotive water-tube boiler, a plu rality of drums forming the top of the firebox and flue, closely-arranged water-tubes nippled and riveted to the ends of drums and forming the door end of the fire-box, other,

water-tubes as 12 riveted and nippled to the front ends of the drums, a water-leg extending acrossthe boiler below the tubes 12, inclined water-tubes connecting said water-leg with certain of the tubes at the door end of fire-box, other reversely-inclined tubes connecting other of the tubes at the door end of the fire-box with certain of the tubes 12, a cross-header connected to the lower ends' of the other tubes 12 and downtakes connecting said cross-header with the water-leg.

,a firebox at one end and a smoke-chamber at the other end, a horizontal flue connecting said fire-box and smoke-chamber, vertical water 24:, In alocomotive-boiler, a row of closelyarranged water-tubes forming the door end of thefire-box, a similar row of water-tubes and also a water-leg at the front end of the flue, rows' ofinclined water-tubes connecting the 7 water-leg with the upper end of certain of the tubesat thefront of the fire-box, other rows of reversely-inclined' tubes connecting other of said tubes at the door end of theiire-box to certain of the tubes at the frontend of the flue, and means establishing a communication 25. A locomotive water-tube boiler having a tire-box at one end and a smoke-chamber at the other end, a horizontal flue connecting said fire-box and smoke-chamber, said flue having substantially straight vertical sides, and a plufire-box and smoke-chamber, a bridge-wall at i the back of the fire-box, aplurality of inclined water-tubes in said flue, a portion of said water-tubes extending from the front of the flue to the bridge wall, and otherof said Water-tubes extendingthe full length of the flue, and all of said tubes being in the path of the products of combustion.

27. A locomotive water-tn be boiler having a fire-box at one end and a smoke-chamber at the other end, a horizontal flue'connecting the loo fire-box and smoke-chamber, a water-space between the front end of the flue and the smokechamber; another water space or chamber between the fire-box and the flue, and a'plurality of inclined water-tubes within the flue, part of said water-tubes connecting the waterspace at' the front of the flue adjacent the bridge-wall, and other water-tubes extending the full length of the flue above thebridgewall, all of said water-tubes bein'g'in the path of the products of combustion I 28. A locomotive watertubeboiler having 'a fire-box at one end and a smoke-chamber at the other end, a horizontal flueconnecting said fire-box and smoke-chamber, and a plurality u 5 of banks of inclined water-tubes within the flue arranged one above the other in a zigzag manner, the upper ends of'the tubes of one bank communicating with the lower ends of the tubes of the nexthigher bank, each bank of tubes extending clear across the boiler, and all the banks of tubes being in the path of the products of combustion.

29. A locomotive water-tube boiler having tubes or headers at the door end of the firebox, other-vertical tubes at the front end of the smoke-chambeuand water-tubes extend- 3 ing the length of the boiler and connecting said vertical Water-tubes, the alternate vertical water-tubes at each end of the boiler constituting nptakes and other water-tubes constituting downtakes.

30. A locomotive Water-tube boiler having a fire-box at one end and a smoke-chamber at the other end, a horizontal flue connecting said -fire-box and smoke-chamber, vertical tubular headers at the door end of the fire-box, other vertical tubular headers at the smoke-chamber end of the flue, and oppositely-inclined Water-tubes connecting one set of the tubular headers to the other, the alternate tubular headers at each end of the boiler constituting nptakes and the other tubular headers constitnting downtakes. Y

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JAMES M. MOCLELLON.

Witnesses:

LoUIs (J. SMITH, MARGARET A. DUNN. 

